uncludes procmail v3.22

http://www.procmail.org/
    
Procmail can be used to create mail-servers, mailing lists, sort your incoming mail into separate
folders/files (real convenient when subscribing to one or more mailing lists or for prioritising
your mail), preprocess your mail, start any programs upon mail arrival (e.g. to generate different
chimes on your workstation for different types of mail) or selectively forward certain incoming mail
automatically to someone.